import unittest
from tools.add import add


class TestAdd(unittest.TestCase):
 def test_1(self):
  self.assertEqual(2, add(1, 1))
 def test_2(self):
  self.assertEqual(3, add(1, 2))
 def test_3(self):
  self.assertEqual(7, add(3, 4))
 def test_4(self):
  self.assertEqual(9, add(4, 5))

if __name__ == '__main__':
 unittest.main()